Step
*
of Lemma
geo-midpoint_wf
∀[e:GeometryPrimitives]. ∀[m,a,b:Point].  (a=m=b ∈ ℙ)
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[e:GeometryPrimitives].  \mforall{}[m,a,b:Point].    (a=m=b  \mmember{}  \mBbbP{})
By
Latex:
ProveWfLemma
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